In: Math
Mathematical explanation of 2 answers
Since the distance has been modelled as quadratic equation of height, it means there has to be 2 real solutions as the distance. Unless the height achieved is the maximum, there will always be 2 answers if there are real solution.
Game explanation of 2 answers
Every time football is shot (or hit), it goes to a high point and then come back down.
There are 2 points, for which height is equal situated either side of mid point (i.e. heighest point).